Exploring 3-Digit Numbers with Base Ten Blocks

The video tutorial teaches third graders how to model three-digit numbers using place value concepts and base ten blocks. It explains the place value system, starting from ones, tens, to hundreds, and demonstrates how to represent numbers like 123, 406, and 360 using cubes, rods, and flats. Each number is broken down into its place values, and an addition sentence is written to match the model. The tutorial aims to help students understand the composition of three-digit numbers through visual representation.

What is the place value of the rightmost digit in a three-digit number?

• Tens

• Ones

• Hundreds

• Thousands

Which base ten block represents the tens place?

• Sphere

• Rod

• Cube

• Flat

Which base ten block is used to represent the ones place?

• Flat

• Rod

• Sphere

• Cube

How many rods are used to represent the number 123?

• 1

• 4

• 2

• 3

What is the addition sentence for the number 123 modeled with base ten blocks?

• 10 + 2 + 3

• 1 + 2 + 3

• 123 + 0 + 0

• 100 + 20 + 3

If the tens place has a zero, how many rods are used?

• Two

• Ten

• One

• Zero

What is the correct addition sentence for the number 406?

• 400 + 6

• 40 + 6

• 406 + 0

• 400 + 60

How many flats are used to represent the hundreds place in the number 360?

• 0

• 36

• 6

• 3

What does six rods represent in the modeling of three-digit numbers?

• Sixty

• Six ones

• Six hundreds

• Six thousands

What is the addition sentence for the number 360?

• 300 + 6

• 360 + 0

• 30 + 60

• 300 + 60